Cylinder Head Assembly for 2013-21 Tucson Sonata Hybrid 2.0L with Engine Code G4NC.This cylinder head is constructed from aluminum and designed as a direct replacement for the specified models.It features precise machining and optimized airway design to improve airflow efficiency, enhance air-fuel mixing in the combustion chamber, and increase engine power and torque output.The assembly withstands mechanical loads from gas pressure and cylinder bolts, as well as thermal loads from exposure to hot gases during.Compatible with the following part numbers: 21102-2E063, 22320-2E000, 22321-2E000, 20910-2EA00, 21356-2E021, 28313-2E050, 21355-2E021, 21443-2E000.Fits: - 2021 Tucson SE, Value Edition 2.0L L4 - 2020 Tucson SE, Value Edition 2.0L L4 - 2019 Sonata Hybrid Limited, Hybrid SE, Plug-In Hybrid, Plug-In Hybrid Limited 2.0L L4 Full Hybrid EV-Gas, Plug-In Hybrid EV-Gas - 2019 Tucson SE, Value Edition 2.0L L4 - 2018 Sonata Hybrid Limited, Hybrid SE, Plug-In Hybrid, Plug-In Hybrid Limited 2.0L L4 Full Hybrid EV-Gas, Plug-In Hybrid EV-Gas - 2017 Sonata Hybrid Limited, Hybrid SE, Plug-In Hybrid, Plug-In Hybrid Limited 2.0L L4 Full Hybrid EV-Gas, Plug-In Hybrid EV-Gas - 2016 Sonata Hybrid, Hybrid Limited, Plug-In Hybrid, Plug-In Hybrid Limited 2.0L L4 Full Hybrid EV-Gas, Plug-In Hybrid EV-Gas The package includes one engine cylinder head assembly.Installation requires no modifications; replace the old unit with the one directly.This replacement part is manufactured independently.All brand references are used solely to denote compatibility with listed models.